???? ????? DIN PN16 - ???? ???? ?????? ????????? ????????

?????? ?????? DIN PN16 ?????? ?? ???? Shijiazhuang Deye Piping Idndustrys Co.,Ltd. ?? ???? ????? ???? ?????? ???? ?????? ?? ?????? ???? ????? ?????. ??? ?????? ????? ??????? ????? ?? ????????? ?? ?????? ??? ????? ?????? ??????? ?????? ??????????? ???????????????. ???? ?????? ?????? DIN PN16? ?????? ?????? ????? ????? ????? ??????? ???? ????? ?? ???? ??????? ????????. ????? ?????? ???? ???? ???? ??????? ?????? ???????? ??? ????? ??????? ??? ???? ????? ???????. ?????? ?????? ????? ?? ????? DIN PN16? ??? ???? ???? ???? ??? ???? 16 ???? ??? ????? ??????? ???????? ????? ???????. ?? ??????? ?????? ???????? ??????? ???????? ?????? ???? ?????? ?? ??? ??????? ?????? ?????? ?? ???????? Shijiazhuang Deye Piping Idndustrys Co.,Ltd. ???? ?????? ?? ???????? ??????? DIN PN16 ?????? ????? ?????? ?????? ?????????? ??????? ????????. ???? ????? ??????? ?? ???? ?????? ??????? ??? ??? ?????? ?????? ??????? ???????? ?????? ?? ?????? ???????